Volume 4, Issue 1, June 2020, Page: 14-21
Replacing Cinder Gravel as Alternative Base Course Material
Fisseha Wagaw Maniyazawal, Department of Civil Engineering, College of Engineering and Technology, Bonga University, Bonga, Ethiopia
Received: Jan. 2, 2020;       Accepted: Mar. 9, 2020;       Published: Mar. 24, 2020
DOI: 10.11648/j.ajcbm.20200401.13      View  457      Downloads  85
Abstract
Costs relating to haulage and processing of materials have considerable impact upon economics of road construction. Hence material search is generally restricted to about 10km corridor centering on the road but materials found at this distance may not satisfy the required quality. Cinder gravels are most abundant materials found in tropical countries like Ethiopia especially in rift valley zones where there are active volcanoes. The main objective of the study was to investigating use of cinder gravels as base course material through blending with conventional base course material, CSA, and stabilization with cement. According to results of sieve analysis, ACV, flakiness index and CBR, 30% of CSA can be replaced by cinder gravels for use as GB1 material and for cement treated cinder gravels adding 6% and 8% cement make them suitable for use as CB2 and CB1 base course materials respectively, referring to their 14 day compressive strength as determined by UCS test while the mix with 10% cement satisfies US Army specification. Based on the results of the research, it is recommended that utilization of the locally available cinder gravels shall be given due consideration for upcoming road construction projects in the study area or in other locations with similar characteristics.
Keywords
Marginal Materials, Cinder Gravel, Conventional Material, CSA, Cement Treated, GB1, UCS, CB1 and CB2
To cite this article
Fisseha Wagaw Maniyazawal, Replacing Cinder Gravel as Alternative Base Course Material, American Journal of Construction and Building Materials. Vol. 4, No. 1, 2020, pp. 14-21. doi: 10.11648/j.ajcbm.20200401.13
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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